Born in 1963
Software author and amateur jazz musician,
Engineer and nerd,
Part time rautavist in Frankfurt, Germany
Internet projects
AstroViewer Sky Map
AstroViewer is an interactive sky map that helps you to find your way in the night sky quickly and easily.
AstroViewer ISS
The positions of the International Space Station ISS and the Chinese Space Station Tiangong and their ground tracks in real time.
ISS and Tiangong sighting opportunities for any location.
AstroViewer Widgets
Here you find HTML code to embed a night sky map, the current position of the ISS or other AstroViewer Widgets in your website.
The Low Gs
Ukulele Bass Vocals
Jazz
We founded The Low Gs, a ukulele jazz band, in 2018.
Ukulele Voicings
Here you find all voicings (that is where you place your fingers on the fretboard) for a given chord. And you find all chords made up by a specific voicing on your ukulele.
Rautavistic Pico-Projects ?
QRlify
Photos as QR-Codes
FlatGPT
My answer to ChatGPT
Comment Viewer
The hidden world of HTML comments
Text-o-mat
It writes and writes...
Redundancy
Deflate your texts
Roman Calculator
Do as the Ancient Romans did
Decimal Time
All in on the ten
Colorful Matter
"Game of Life" in color
Golqroc
Game of Life QR-Code Challenge
Digital Watches
... excitingly hard to read
Ananyms
Clever stage names
Signpost Quiz
What's the location of this signpost?
Mileage Hunter
Collect flight miles
Fair Meeting Point
Fairness by equidistance
Circuit Board Puzzle
Design your own Hardware
Prime Summands
Prime factors was yesterday...